package api

import (
	"strings"
	"testing"

	"home-vue-go/internal/config"
)

func TestURLValidation(t *testing.T) {
	for _, value := range []string{"https://example.com", "http://localhost:8080"} {
		if !validHTTPURL(value) {
			t.Errorf("expected valid site URL: %s", value)
		}
	}
	for _, value := range []string{"javascript:alert(1)", "//example.com", "example.com"} {
		if validHTTPURL(value) {
			t.Errorf("expected invalid site URL: %s", value)
		}
	}
	for _, value := range []string{"mailto:a@example.com", "tel:+8613800000000", "https://example.com"} {
		if !validContactURL(value) {
			t.Errorf("expected valid contact URL: %s", value)
		}
	}
	for _, value := range []string{"/uploads/qr.png", "https://example.com/qr.png"} {
		if !validQRCode(value) {
			t.Errorf("expected valid QR path: %s", value)
		}
	}
	for _, value := range []string{"/uploads/../secret.png", "data:image/png;base64,abc"} {
		if validQRCode(value) {
			t.Errorf("expected invalid QR path: %s", value)
		}
	}
}

func TestIconValueValidation(t *testing.T) {
	for _, value := range []string{
		"fas fa-home",
		"fab fa-github",
		"iconify:mdi:home",
		"iconify:material-symbols:add-home-outline",
	} {
		if !validIconValue(value) {
			t.Errorf("expected valid icon value: %s", value)
		}
	}
	for _, value := range []string{
		"",
		"iconify:MDI:home",
		"iconify:mdi:",
		"iconify:mdi:home/../../x",
		"fas fa-home\"><script>",
		strings.Repeat("a", maxIconValueLength+1),
	} {
		if validIconValue(value) {
			t.Errorf("expected invalid icon value: %s", value)
		}
	}
}

func TestAboutLinkIconValidation(t *testing.T) {
	settings := config.DefaultSiteSettings()
	settings.AboutLinks[0].Icon = ""
	if err := validateSiteSettings(settings); err != nil {
		t.Fatalf("expected empty about link icon to use the frontend fallback: %v", err)
	}

	settings.AboutLinks[0].Icon = "iconify:tabler:brand-github"
	if err := validateSiteSettings(settings); err != nil {
		t.Fatalf("expected valid Iconify about link: %v", err)
	}

	settings.AboutLinks[0].Icon = "<script>"
	if err := validateSiteSettings(settings); err == nil {
		t.Fatal("expected invalid about link icon to be rejected")
	}
}

func TestPercentageCountsSumsToOneHundred(t *testing.T) {
	values := percentageCounts(map[string]int{"direct": 1, "search": 1, "other": 1}, 3)
	total := 0
	for _, value := range values {
		total += value["value"].(int)
	}
	if total != 100 {
		t.Fatalf("percentage total = %d, want 100", total)
	}
}